package org.example.qweqq.controller;

import jakarta.validation.constraints.Pattern;
import org.example.qweqq.pojo.Result;
import org.example.qweqq.pojo.User;
import org.example.qweqq.service.impl.UserService;
import org.example.qweqq.utils.JwtUtil;
import org.example.qweqq.utils.MD5Utils;
import org.example.qweqq.utils.ThreadLocalUtil;
import org.hibernate.validator.constraints.URL;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.core.ValueOperations;
import org.springframework.util.StringUtils;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.*;

import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;

@RestController
@RequestMapping("/user")
@Validated
public class UserController {

    @Autowired
    private UserService userService;
    @Autowired
    private StringRedisTemplate stringRedisTemplate;
    @PostMapping("/register")
    public Result register(@Pattern(regexp = "^\\S{5,16}$")String username, @Pattern(regexp = "^\\S{5,16}$")String password){
        // 查询用户
        User u = userService.findByUserName(username);
        // 注册
        if(u == null){
            userService.register(username,password);
            return  Result.success();
        }else{
            return Result.error("用户名已被占用");
        }
    }
    @PostMapping("/login")
    public Result<String> login(@Pattern(regexp = "^\\S{5,16}$")String username, @Pattern(regexp = "^\\S{5,16}$")String password){
        // 根据用户名查询用户
        User loginUser = userService.findByUserName(username);
        // 判断该用户是否存在
        if(loginUser == null){
            return Result.error("用户名错误");
        }
        //判断密码是否正确
        if(MD5Utils.getMD5String(password).equals(loginUser.getPassword())){
            // 登陆成功
            Map<String,Object> claims = new HashMap<>();
            claims.put("id",loginUser.getId());
            claims.put("username",loginUser.getUsername());
            String token = JwtUtil.genToken(claims);
            //把token储存到redis中
            ValueOperations<String, String> ops = stringRedisTemplate.opsForValue();
            ops.set(token,token,1, TimeUnit.HOURS);
            return Result.success(token);
        }
        return Result.error("密码错误");
    }
    @GetMapping("/userInfo")
    public Result<User> userInfo(@RequestHeader(name="Authorization") String token){
        //根据用户名查询用户
//        Map<String,Object> map = JwtUtil.parseToken(token);
//        String username=(String) map.get("username");
        Map<String,Object> map = ThreadLocalUtil.get();
        User user= userService.findByUserName((String) map.get("username"));
        return Result.success(user);
    }
    @PutMapping("/update")
    public Result update(@RequestBody @Validated User user){
        userService.update(user);
        return Result.success();
    }
    @PatchMapping("/updateAvatar")
    public Result updateAvatar(@RequestParam @URL String avatarUrl){
        userService.updateAvatar(avatarUrl);
        return Result.success();
    }

    @PatchMapping("/updatePwd")
    public Result updatePwd(@RequestBody Map<String,String> params,@RequestHeader("Authorization") String token){
        //1.校验参数
        String oldPwd =params.get("old_pwd");
        String newPwd =params.get("new_pwd");
        String rePwd =params.get("re_pwd");
        if(!StringUtils.hasLength(oldPwd)||!StringUtils.hasLength(newPwd)||!StringUtils.hasLength(rePwd)){
            return Result.error("缺少必要参数");
        }

        Map<String,Object> map = ThreadLocalUtil.get();
        String username = (String) map.get("username");
        User loginUser=userService.findByUserName(username);
        if(!loginUser.getPassword().equals(MD5Utils.getMD5String(oldPwd))){
            return Result.error("原密码填写不正确");
        }
        if(!rePwd.equals(newPwd)){
            return Result.error("两次填写的不一致");
        }
        // 密码更新
        userService.updatePwd(newPwd);
        // 删除redis中对应的token
        ValueOperations<String, String> ops = stringRedisTemplate.opsForValue();
        ops.getOperations().delete(token);
        return Result.success();
    }


}
